The world’s most dense, liquid-cooled 4U server, built from the ground up to support the extreme demands of modern AI. Integrating up to eight next-generation NVIDIA GPUs, the LM TEK RM-4U8G Server is the state-of-the-art foundation for achieving your largest AI, HPC and machine learning goals.
Modern HPC and AI accelerators generate immense heat that air cooling cannot effectively manage. Our advanced liquid-cooling solution prevents thermal throttling, guarantees peak performance stability, and drastically reduces energy costs.
The proprietary Smart PWM Controller is the intelligence behind the cooling system. It constantly analyzes thermal and load conditions, dynamically managing resources to maintain a 24/7 optimal state, maximizing compute output and efficiency without manual tuning.
Your AI Future
Starts here
Meet
RM-4U8G Server
UNPARALLELED
COOLING
PERFORMANCE
Liquid cooling eliminates thermal fatigue,
allowing components to stay
cooler and last longer.
PERFORMANCE
OUTPUT
Eliminating thermal throttling removes bottlenecks
and increases performance output.
COMPUTE DENSITY
Liquid cooled GPUs occupy less space,
allowing 2x – 3x compute power
in the same cubic footprint.
LONGER
LIFESPAN
Liquid cooling eliminates thermal fatigue,
allowing components to stay
cooler and last longer.
Our proprietary liquid-cooling loop is engineered as an integral part of the RM-4U8G architecture, not just an add-on.
This dedicated approach allows us to push NVIDIA accelerators past standard limits, achieving speeds and performance metrics that
air-cooled systems simply cannot touch. By eliminating heat barriers, we ensure your investment delivers maximum computational
throughput and superior Total Cost of Ownership (TCO) over its lifespan, making it the smarter choice for mission-critical AI/HPC.
Unleash Unprecedented Scale:
Powering AI with 8x GPUs
The LM TEK RM-4U8G Server redefines what is possible in a single server chassis. Integrating eight
high-performance NVIDIA GPUs allows massive models to be trained faster and complex HPC
simulations to run with greater fidelity. This parallel architecture minimizes latency and maximizes
throughput, providing the bedrock for breakthroughs in modern machine learning.
Integrating eight high-performance NVIDIA GPUs, the LM TEK RM-4U8G Server enables massive models to be trained faster and complex HPC simulations to run with greater fidelity. This parallel architecture minimizes data transfer latency and maximizes computational throughput, drastically accelerating your project cycle from concept to deployment.
The dedicated, high-speed interconnect between the eight accelerators ensures seamless data exchange across the compute fabric. This crucial engineering eliminates common bottlenecks, guaranteeing a unified, powerful compute resource.
This solution is engineered to handle the intense demands of next-generation, exascale computing and the largest foundation models. This extreme concentration of compute power provides the necessary state-of-the-art foundation for continuous innovation.
Deploy the LM TEK RM-4U8G Server and instantly gain the competitive edge needed to lead your sector,
turning computational scale into actionable breakthroughs.
The Power Has Never Been
So Dense
The redefined density, delivering 8x GPU compute capacity in a compact 4U footprint.
This breakthrough form factor saves critical rack space without compromising performance,
ensuring maximum computational output per square mete
Smaller Form Factor
Ultimate Space Savings. Achieves 8x GPU capacity in a true 4U chassis, significantly reducing your
data center footprint and lowering operational costs compared to standard 5U+ air-cooled solutions.
I/O Ports
Easily accessible
front-facing I/O ports
simplify management
and maintenance.
Coolant Level Indicator
The integrated
front-facing indicator
provides real-time
visibility into the fluid
level.
Extreme
Cooling
Surface
EK-Pro Monolith Radiator
is purposefully built
for the highest
Thermal Desifn Power -TDP
Air Flow Optimized
The chassis is engineered for optimal thermal transfer in mixed-cooling environments. Optimized internal airflow manages component heat outside the primary liquid loop, supporting maximum efficiency and reducing overall system energy use.
Up to
of Redundant
Power
high-fidelity simulations across the entire cluster.
Built-in N+1 power redundancy is achieved through five independently operated, hot-swappable 2000W PSUs. This critical configuration guarantees system uptime and simplifies maintenance, allowing replacement without interrupting mission-critical training cycles or risking costly data center outages.
Power reliability is non-negotiable for exascale AI workloads. The redundant power architecture provides total peace of mind, ensuring your largest, multi-day training jobs proceed without interruption. This critical reliability protects your investment and research timelines, driving continuous project momentum.
Total power delivery of 10,000 watts ensures all 8 high-powered NVIDIA accelerators receive maximum, sustained energy, even under the most extreme loads. This ample supply eliminates power throttling, guaranteeing continuous peak performance for deep learning and
high-fidelity simulations across the entire cluster.
Built-in N+1 power redundancy is achieved through five independently operated, hot-swappable 2000W PSUs. This critical configuration guarantees system uptime and simplifies maintenance, allowing replacement without interrupting mission-critical training cycles or risking costly data center outages.
Power reliability is non-negotiable for exascale AI workloads. The redundant power architecture provides total peace of mind, ensuring your largest, multi-day training jobs proceed without interruption. This critical reliability protects your investment and research timelines, driving continuous project momentum.
The EK Smart PWM Controller offers intelligent, proactive protection for your water-cooled system.
The EK Smart PWM Controller
offers intelligent, proactive
protection for your
water-cooled system
It uses predefined temperature targets to automatically adjust pump and fan speeds, ensuring highly efficient cooling and preventing overheating under any workload.
Beyond performance management, the controller provides critical hardware-level security:
a pump failure shutdown immediately powers down your system if flow stops, and an audible alarm
provides instant notification if a fan malfunctions. With EK-Loop Smart PWM Control your saystem
gets total control and absolute protection for your custom loop.
Leverage quick-disconnect technology to hot-swap components without draining the loop,
achieving zero downtime for upgrades.
Keep Flow
Infinite
The proprietary design of our QDC fittings incorporates an instant internal shut-off valve. When a component is disconnected, the flow is immediately redirected, maintaining pressure and continuous cooling for all other active components and servers in the rack.
Designed for Minimal System Downtime
Non-drip
QDC
This critical feature protects sensitive electronic components, simplifies maintenance, and keeps your valuable data center environment clean and dry.
Techical Data
Case
Model No.
Case
Chassis Form Factor
Case
Motherboard
Case
Indicators
Case
Expansion Slot
Case
Dimensions
Case
Front I/O Port
Cooling
Pump
Cooling
Radiators
Cooling
Tubes
Cooling
Fans
Cooling
Manifold
Cooling
CPU Cooling
Power Supply
Type
Power Supply
Output Power (W) – Up to
Up to 2048 GB
CPU
1 CPU Supported
Up to 8 GPUs
Supported GPU Models
Geforce RTX™ 5090 Zotac
NVIDIA RTX™ A5000
NVIDIA RTX™ A5500
NVIDIA RTX™ A6000
NVIDIA RTX™ 6000 Ada
NVIDIA® A100 80GB
NVIDIA® A100
NVIDIA® H100 NVL
NVIDIA® H100
NVIDIA® H200 NVL
NVIDIA® PRO 6000 Blackwell Server Edition
A unified vision for next-generation AI, bringing together
proprietary liquid cooling, advanced system architecture, and expert global deployment.
As the main creator, LM TEK designed and engineered the RM-4U8G server system from the ground up, ensuring every component, from the chassis to the system management, is optimized for extreme performance.
EK, the global leader in liquid cooling technology, provides the proprietary thermal hardware for the LM TEK RM-4U8G Server.
Our custom-designed cooling solutions, including the EK-Pro product line, are purpose-built to tame the highest TDPs and guarantee continuous,
non-throttled performance.
Boston is our trusted system integrator and global distribution partner. They manage the expert assembly, rigorous testing, and worldwide logistics of the RM-4U8G. This partnership ensures rapid deployment,seamless delivery, and localized support for your AI and HPC infrastructure, wherever you are located.
Interested in deploying the RM-4U8G liquid-cooled server? Our team is ready to assist with performance specs, custom configurations, and deployment logistics.